+86-577-67379084 info@specsvalve.com

SPECS VALVE
  • Home
  • About us
    • Company profile
    • R&D ability
    • Quality control
    • Service
    • Our calculation program
  • Products
    • Control Valve
    • Self Operated Regulator
    • Special Material Control Valve
    • Fluorine Lined Valve
    • Ball Valve
    • Gate Valve
    • Butterfly Valve
    • Globe Valve
    • Check Valve
    • Strainer
    • Plug Valve
    • Pneumatic Actuator
    • Pneumatic Accessories
  • News
  • Knowledge
  • Download
    • E-Catalog
    • IOM
  • F.A.Q
  • Contact us
  1. Home
  2. Products
  3. Butterfly Valve
  4. High Performace Butterfly Valve
  • High Performace Butterfly Valve

High Performace Butterfly Valve

  • Views: 1038
  • Size: 2" ~ 40"
  • Pressure Rating: 150-600LB
  • Body: Carbon Steel, Stainless Steel, Nickel Aluminum Bronze
  • High Performace Butterfly Valve
    Inquiry Send Email

    Description

    Technical Specifications

    SPECS double offset Butterfly Valves or we can call them high performance Butterfly Valves, shaft offsets are created by designing the valve with the shaft located behind the centerline of the sealing surface (offset1) and slightly to one side of the pipe centerline (offset2). These double offets offer unique soft seal construction between disc and seat to get high seal performance and high durability. The seat in the body can be changed easily from the body.


    Applicable Standard

     Design & Manufacture Standard: API 609

     Face to Face: API609, BS EN 558, DIN3202, ISO 5752

     End Connection: DIN, BS, UNI, ISO, ANSI, AS, JIS

     Test Standard: API598

     

    Products Range

     Size: 2" ~ 40"

     Pressure Rating: 150-600LB

     Body: Carbon Steel, Stainless Steel, Nickel Aluminum Bronze

     Seat: NBR, EPDM, VITON, PTFE , RPTFE, Metal

     End: Wafer, Lug, Flange, BW

     

    Design Features

    Double Offset Frictionless Design

    1st offset: Shaft is positioned downstream of the centerline of the seat.

    2nd offset: Shaft is off center of the vertical axis of the seat.

     

    Seat Structure

    1. Double Offset PTFE Seat Butterfly Valve

    A surplus between PTFE Seat and Disc ensures the seal in low pressure. The force of medium always pushes seat contacting to sealing surface and becomes more reliable in high pressure. The disc surface is a sphere design to reduce frictional force, and the valve seat can be replaced easily.

     

    2. Double Offset Fire Safe PTFE Butterfly Valve

    Fire Safe valve Seat with dual seal including primary PTFE seat insert and metal seat. In the event that the PTFE insert is destroyed, the secondary metal seat provides effective shut-off.

     

    3. Double offset Rubber Seat Butterfly Valve

    A variety of rubber seat, to meet the needs of a larger size. The disc surface is designed into sphere type to reducing contacting area and frictional force which extends the usage life. Valve seat can be replaced or recharge easily.

     

    Shaft Retention

    Externally retained, double blowout proof stem design as API 609.

    External: Shaft is designed with an integral collar and blowout prevented by gland follower.

     

    Zero Leakage

    Disc-Seat sealing is achieved by torque force evenly loaded on disc laminated seal edge, which has resilient function to assure Zero Leakage in both hydrostatic or air test per API 598.

     

    Low Emission Shaft Seal

    SPECS standard emission control is 20 PPM

    a.) Shaft is fully guided by shaft bearing & gland follower to avoid any side load due to line pressure thrust.

    b.) The packing set is pre-compressed and is a combination of braided graphite rings top and bottom with die formed flexible graphite rings between.

    c.) Controlled Ra0.4 ~ Ra0.8 finish on the shaft and Ra1.6 on the Stuffing box provides optimum packing and shaft sealing Performance.

    d.) Optional Live Loaded gland flange is available to provide constant packing compression to reduce fugitive emission from shaft seal.

    e.) Optional shaft seal design per Shell MESC 77/312 & TA-Luft is also available upon request.

     


    Compact & light Design

    SPECS Double offset butterfly valve is designed as API 609, due to its compact & light design, it is an economical substitute for gate, globe and Ball Valves. Below is a comparison table based on a SPECS 6" valve.

     


    1. ISO 5211 Top Flange.

    2. In addition to durable, standard V-rlng packing, you can also choose from optional, graphite high-temperature packing or emissions control design.

    3. Bi-Directional, Shut off performance.

    4. Optional seat: Rubber, PTFE, RPTFE, Fire Safe PTFE.

    5. Long life durability of double offset operating principal minimize seat wear & lower operating torques.

    6. Positive sealing which is mechanically achieved and does not rely on line pressure assistant.



    Double offset Construction

    Inquiry Us





    RELATED PRODUCTS

    Pneumatic Diaphragm Actuator

    Pneumatic Diaphragm Actuator

    Filter Regulator

    Filter Regulator

    Camflex Rotary Ball Valve

    Camflex Rotary Ball Valve

    Wafer V-port segment ball valve

    Wafer V-port segment ball valve

    C95500 Nickel Aluminum Bronze Control Valve

    C95500 Nickel Aluminum Bronze Control Valve

    Small Flow Control Valve

    Small Flow Control Valve

    Concentric Butterfly Valve

    Concentric Butterfly Valve

    Low Temperature Membrane Actuator

    Low Temperature Membrane Actuator

    Product Categories

    • Control Valve
    • Self Operated Regulator
    • Special Material Control Valve
    • Fluorine Lined Valve
    • Ball Valve
    • Gate Valve
    • Butterfly Valve
    • Globe Valve
    • Check Valve
    • Plug Valve
    • Strainer
    • Pneumatic Actuator
    • Pneumatic Accessories

    Links

    Google.comBaidu.com

    ABOUT US

    • Company profile
    • R&D ability
    • Quality control
    • Service
    • Our calculation program

    PRODUCTS

    • Control Valve
    • Self Operated Regulator
    • Special Material Control Valve
    • Fluorine Lined Valve
    • Ball Valve
    • Gate Valve
    • Butterfly Valve
    • Globe Valve
    • Check Valve
    • Strainer
    • Plug Valve
    • Pneumatic Actuator
    • Pneumatic Accessories

    FEEDBACK

    CONTACT US

    +86-15957799534

    +86-577-67379084

    info@specsvalve.com

    jack.wu102

    Dong ou Industrial Zone, Oubei Town,Wenzhou City, Zhejiang Province,China

    Copyright © 2013 SPECS VALVE. All Rights Reserved.

    • Skype.
    • E-mail
    • Whatsapp
    • Inquiry